fix(instrumentation-py): repair Mirascope, Mistral, and Ollama OTel 2.x spans

[Nightingalelyy]

Summary

• repair Mirascope 2.5 streaming, real tool argument/result translation, lifecycle ownership, privacy-safe bounded serialization, early-close handling, and current-runtime coverage
• repair Mistral 2.9.3/OpenInference 2.0.6 streaming finalization, lifecycle/refcounting, canonical tools, precise 401/500 errors, redaction, duplicate suppression, and tested dependency floors
• repair Ollama 0.6.2 lifecycle ownership, bounded incremental streaming, call-time parenting, cancellation/early-close cleanup, canonical tools, exact 503 errors, and privacy-safe serialization
• add one patch release intent for all three instrumentation packages

Validation

• focused package tests: Mirascope 30/30, Mistral 18/18, Ollama 16/16 (64/64)

• all three wheels build successfully

• release inventory, release intent, Ruff format/check, Python compilation, and diff checks pass

• exact example marker: otel2-fix-py-group-19-20260817T152514Z

• complete example processes: 18/18

• The exact marker returned 19 traces and 42 records. Every tree and full record was inspected: one root per trace, matching list/tree/detail sets, exact parent links, 42 unique record IDs and 42 unique span IDs, meaningful bounded content, exact model/usage/stream data, connected tools, controlled failures, grouping, privacy, and no forbidden aliases.

• Full source and paired-example diffs were audited against every applicable document under contribution/; canonical span fields, OTel attribute shapes, release-intent/version ownership, and package boundaries have no remaining package-owned violation.

External follow-ups

• native failed workflow roots are still projected as success/200 after ingestion even though in-memory exporter tests prove OTel ERROR
• canonical tool definitions/calls remain available in semantic metadata and completion messages while separate platform tool arrays remain empty
• Mirascope/Ollama canonical provider metadata does not populate platform provider_id
• aggregate instrumentation minimums currently reference unpublished package versions; this PR follows the contribution release-intent workflow and does not hand-edit package versions

Companion examples

• fix(examples-py): validate Mirascope, Mistral, and Ollama OTel 2.x spans respan-example-projects#67

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